Signed-off-by: Samuel Iglesias Gonsalvez <[email protected]>
---
tests/all.py | 1 +
.../CMakeLists.gl.txt | 1 +
.../arb_shader_storage_buffer_object/maxblocks.c | 358 +++++++++++++++++++++
3 files changed, 360 insertions(+)
create mode 100644 tests/spec/arb_shader_storage_buffer_object/maxblocks.c
diff --git a/tests/all.py b/tests/all.py
index 5698543..4515f7b 100755
--- a/tests/all.py
+++ b/tests/all.py
@@ -4038,6 +4038,7 @@ with profile.group_manager(
g(['arb_shader_storage_buffer_object-maxshaderstorageblocksize '],
'maxshaderstorageblocksize')
g(['arb_shader_storage_buffer_object-getintegeri_v'], 'getintegeri_v')
g(['arb_shader_storage_buffer_object-deletebuffers'], 'deletebuffers')
+ g(['arb_shader_storage_buffer_object-maxblocks'], 'maxblocks')
with profile.group_manager(
PiglitGLTest,
diff --git a/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
b/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
index e2b716b..509c937 100644
--- a/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
+++ b/tests/spec/arb_shader_storage_buffer_object/CMakeLists.gl.txt
@@ -13,5 +13,6 @@ piglit_add_executable
(arb_shader_storage_buffer_object-rendering rendering.c)
piglit_add_executable
(arb_shader_storage_buffer_object-maxshaderstorageblocksize
maxshaderstorageblocksize.c)
piglit_add_executable (arb_shader_storage_buffer_object-getintegeri_v
getintegeri_v.c)
piglit_add_executable (arb_shader_storage_buffer_object-deletebuffers
deletebuffers.c)
+piglit_add_executable (arb_shader_storage_buffer_object-maxblocks maxblocks.c)
# vim: ft=cmake:
diff --git a/tests/spec/arb_shader_storage_buffer_object/maxblocks.c
b/tests/spec/arb_shader_storage_buffer_object/maxblocks.c
new file mode 100644
index 0000000..74c95fe
--- /dev/null
+++ b/tests/spec/arb_shader_storage_buffer_object/maxblocks.c
@@ -0,0 +1,358 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+ * DEALINGS IN THE SOFTWARE.
+ */
+
+/** @file maxblocks.c
+ *
+ * From the GL_ARB_shader_storage_buffer_object spec:
+ *
+ * "If the number of active shader storage blocks referenced by the shaders in
+ * a program exceeds implementation-dependent limits, the program will fail
+ * to link. The limits for vertex, tessellation control, tessellation
+ * evaluation, geometry, fragment, and compute shaders can be obtained by
+ * calling GetIntegerv with pname values of MAX_VERTEX_SHADER_STORAGE_BLOCKS,
+ * MAX_TESS_CONTROL_SHADER_STORAGE_BLOCKS,
+ * MAX_TESS_EVALUATION_SHADER_STORAGE_BLOCKS,
+ * MAX_GEOMETRY_SHADER_STORAGE_BLOCKS, MAX_FRAGMENT_SHADER_STORAGE_BLOCKS,
+ * and MAX_COMPUTE_SHADER_STORAGE_BLOCKS, respectively. Additionally, a
+ * program will fail to link if the sum of the number of active shader
+ * storage blocks referenced by each shader stage in a program exceeds the
+ * value of the implementation-dependent limit
+ * MAX_COMBINED_SHADER_STORAGE_BLOCKS. If a shader storage block in a
+ * program is referenced by multiple shaders, each such reference counts
+ * separately against this combined limit.
+ */
+
+#include "piglit-util-gl.h"
+
+PIGLIT_GL_TEST_CONFIG_BEGIN
+
+ config.window_width = 800;
+ config.window_height = 200;
+ config.supports_gl_compat_version = 10;
+ config.window_visual = PIGLIT_GL_VISUAL_RGBA | PIGLIT_GL_VISUAL_DOUBLE;
+
+PIGLIT_GL_TEST_CONFIG_END
+
+static char *
+get_shader(GLenum target, const char *block_prefix, int blocks)
+{
+ char *shader = NULL;
+ const char *vs_source =
+ "#extension GL_ARB_shader_storage_buffer_object : enable\n"
+ "#extension GL_ARB_uniform_buffer_object : enable\n"
+ "\n"
+ "varying vec4 v;"
+ "\n"
+ "%s"
+ "\n"
+ "void main() {\n"
+ " gl_Position = gl_Vertex;\n"
+ " v = vec4(0)%s;\n"
+ "}\n";
+ const char *fs_source =
+ "#extension GL_ARB_shader_storage_buffer_object : enable\n"
+ "#extension GL_ARB_uniform_buffer_object : enable\n"
+ "\n"
+ "varying vec4 v;"
+ "\n"
+ "%s"
+ "\n"
+ "void main() {\n"
+ " gl_FragColor = v%s;\n"
+ "}\n";
+ const char *prefix_template =
+ "layout(std140) buffer %s_block%d {\n"
+ " vec4 %s_var%d;\n"
+ "};\n";
+ const char *body_template =
+ " + %s_var%d";
+ char *prefix, *prefix_tail, *body, *body_tail;
+ int i;
+
+ prefix = calloc(1, (strlen(block_prefix) * 2 + strlen(prefix_template) +
+ 20) * blocks + 1);
+ body = calloc(1, (strlen(block_prefix) + strlen(body_template) +
+ 20) * blocks + 1);
+ prefix_tail = prefix;
+ prefix[0] = 0;
+ body_tail = body;
+ body[0] = 0;
+
+ for (i = 0; i < blocks; i++) {
+ prefix_tail += sprintf(prefix_tail, prefix_template,
+ block_prefix, i,
+ block_prefix, i);
+ body_tail += sprintf(body_tail, body_template,
+ block_prefix, i);
+ }
+
+ switch (target) {
+ case GL_VERTEX_SHADER:
+ asprintf(&shader, vs_source, prefix, body);
+ break;
+ case GL_FRAGMENT_SHADER:
+ asprintf(&shader, fs_source, prefix, body);
+ break;
+ default:
+ piglit_report_result(PIGLIT_FAIL);
+ }
+
+ free(prefix);
+ free(body);
+
+ return shader;
+}
+
+static GLuint
+build_shaders(const char *vs_prefix, int vs_blocks,
+ const char *fs_prefix, int fs_blocks)
+{
+ char *vs_source, *fs_source;
+ GLuint vs, fs, prog;
+
+ vs_source = get_shader(GL_VERTEX_SHADER, vs_prefix, vs_blocks);
+ fs_source = get_shader(GL_FRAGMENT_SHADER, fs_prefix, fs_blocks);
+
+ vs = piglit_compile_shader_text(GL_VERTEX_SHADER, vs_source);
+ fs = piglit_compile_shader_text(GL_FRAGMENT_SHADER, fs_source);
+
+ prog = glCreateProgram();
+ glAttachShader(prog, vs);
+ glAttachShader(prog, fs);
+ glLinkProgram(prog);
+
+ if (!piglit_link_check_status_quiet(prog)) {
+ glDeleteProgram(prog);
+ prog = 0;
+ }
+
+ glDeleteShader(vs);
+ glDeleteShader(fs);
+
+ return prog;
+}
+
+static bool
+fail_link_test(const char *vs_prefix, int vs_blocks,
+ const char *fs_prefix, int fs_blocks)
+{
+ GLuint prog;
+
+ prog = build_shaders(vs_prefix, vs_blocks,
+ fs_prefix, fs_blocks);
+
+ if (prog) {
+ printf("linked with (%d, %d) blocks, should have failed\n",
+ vs_blocks, fs_blocks);
+ return false;
+ }
+
+ glDeleteProgram(prog);
+ return true;
+}
+
+static bool
+test_draw(int y_index, GLuint prog,
+ GLuint *bos, int test_block, int active_blocks)
+{
+ float black[4] = {0, 0, 0, 0};
+ /* Color values have to be 0 or 1, since in the case of a
+ * shared block between VS and FS, they'll be added twice.
+ */
+ float other_colors[][4] = {
+ {1, 0, 0, 0},
+ {0, 1, 0, 0},
+ {0, 0, 1, 0},
+ {1, 1, 1, 1},
+ };
+ float *color;
+ int screen_w = 10;
+ int screen_h = 10;
+ int screen_x = screen_w * (1 + 2 * test_block);
+ int screen_y = screen_h * (1 + 2 * y_index);
+ float x = -1.0 + 2.0 * screen_x / piglit_width;
+ float y = -1.0 + 2.0 * screen_y / piglit_height;
+ float w = 2.0 * screen_w / piglit_width;
+ float h = 2.0 * screen_h / piglit_height;
+ int i;
+ float *expected_color;
+
+ assert(test_block < active_blocks);
+
+ glViewport(0, 0, piglit_width, piglit_height);
+
+ expected_color = other_colors[test_block % ARRAY_SIZE(other_colors)];
+
+ for (i = 0; i < active_blocks; i++) {
+ if (i == test_block)
+ color = expected_color;
+ else
+ color = black;
+
+ glBindBuffer(GL_SHADER_STORAGE_BUFFER, bos[i]);
+ glBufferData(GL_SHADER_STORAGE_BUFFER,
+ 4 * sizeof(float), color, GL_DYNAMIC_DRAW);
+ }
+
+ piglit_draw_rect(x, y, w, h);
+
+ if (screen_x + screen_w >= piglit_width ||
+ screen_y + screen_h >= piglit_height) {
+ printf("warning: window too small to display test rect.\n");
+ return true;
+ }
+
+ return piglit_probe_rect_rgba(screen_x, screen_y,
+ screen_w, screen_h, expected_color);
+}
+
+static bool
+pass_link_test(int y_index,
+ const char *vs_prefix, int vs_blocks,
+ const char *fs_prefix, int fs_blocks)
+{
+ bool pass = true;
+ GLuint prog;
+ GLuint *bos = (GLuint *) calloc(vs_blocks + fs_blocks, sizeof(GLuint));
+ GLint active_blocks;
+ int i;
+
+ prog = build_shaders(vs_prefix, vs_blocks,
+ fs_prefix, fs_blocks);
+
+ if (!prog) {
+ printf("shader with (%d, %d) blocks failed to link\n",
+ vs_blocks, fs_blocks);
+ free(bos);
+ return false;
+ }
+
+ glUseProgram(prog);
+ glGetProgramInterfaceiv(prog, GL_SHADER_STORAGE_BLOCK,
+ GL_ACTIVE_RESOURCES, &active_blocks);
+ glGenBuffers(active_blocks, bos);
+ for (i = 0; i < active_blocks; i++) {
+ glShaderStorageBlockBinding(prog, i, i);
+ glBindBufferBase(GL_SHADER_STORAGE_BUFFER, i, bos[i]);
+ }
+
+ for (i = 0; i < active_blocks; i++) {
+ if (!test_draw(y_index, prog, bos, i, active_blocks)) {
+ pass = false;
+ }
+ }
+
+ glDeleteBuffers(active_blocks, bos);
+ glDeleteProgram(prog);
+
+ free(bos);
+
+ return pass;
+}
+
+enum piglit_result
+piglit_display(void)
+{
+ bool pass = true;
+ GLint max_vs, max_fs, max_combined, max_combined_out;
+
+ piglit_require_extension("GL_ARB_shader_storage_buffer_object");
+ piglit_require_extension("GL_ARB_program_interface_query");
+
+ glGetIntegerv(GL_MAX_VERTEX_SHADER_STORAGE_BLOCKS, &max_vs);
+ glGetIntegerv(GL_MAX_FRAGMENT_SHADER_STORAGE_BLOCKS, &max_fs);
+ glGetIntegerv(GL_MAX_COMBINED_SHADER_STORAGE_BLOCKS, &max_combined);
+ glGetIntegerv(GL_MAX_COMBINED_SHADER_OUTPUT_RESOURCES,
&max_combined_out);
+
+ printf("Max VS shader storage blocks: %d\n", max_vs);
+ printf("Max FS shader storage blocks: %d\n", max_fs);
+ printf("Max combined shader storage blocks: %d\n", max_combined);
+ printf("Max combined shader output resources: %d\n", max_combined_out);
+
+
+ glClearColor(0.5, 0.5, 0.5, 0.5);
+ glClear(GL_COLOR_BUFFER_BIT);
+
+ pass = fail_link_test("vs", max_vs + 1,
+ "vs", 0) && pass;
+ pass = fail_link_test("fs", 0,
+ "fs", max_fs + 1) && pass;
+ if (max_vs + max_fs > max_combined) {
+ pass = fail_link_test("vs",
+ max_vs,
+ "fs",
+ max_combined + 1 - max_vs) && pass;
+
+ pass = fail_link_test("shared",
+ max_vs,
+ "shared",
+ max_combined + 1 - max_vs) && pass;
+ }
+
+ if (max_combined_out) {
+ pass = fail_link_test("vs",
+ max_vs,
+ "fs",
+ max_combined_out + 1 - max_vs) && pass;
+
+ pass = fail_link_test("shared",
+ max_vs,
+ "shared",
+ max_combined_out + 1 - max_vs) && pass;
+ }
+
+ pass = pass_link_test(0,
+ "vs", max_vs,
+ "vs", 0) && pass;
+
+ pass = pass_link_test(1,
+ "fs", 0,
+ "fs", max_fs) && pass;
+
+ pass = pass_link_test(2,
+ "vs", max_vs,
+ "fs", MIN2(max_fs,
+ max_combined - max_vs)) && pass;
+
+ pass = pass_link_test(3,
+ "shared", max_vs,
+ "shared", MIN2(max_fs,
+ max_combined - max_vs)) && pass;
+
+ if (max_combined_out) {
+ pass = pass_link_test(4,
+ "shared", max_vs,
+ "shared",
+ MIN2(max_fs, max_combined - max_vs)) &&
pass;
+ }
+
+ piglit_present_results();
+
+ return pass ? PIGLIT_PASS : PIGLIT_FAIL;
+}
+
+
+void
+piglit_init(int argc, char **argv)
+{
+}
--
2.1.0
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